21219000

素因数分解:

$2^3\times 3^1\times 5^3\times {\mathrm{11}}^1\times {\mathrm{643}}^1$

素因数の和:678

約数の個数: 128

約数和(自身を含む): 72334080

約数和(自身を除く): 51115080

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 20, 22, 24, 25, 30, 33, 40, 44, 50, 55, 60, 66, 75, 88, 100, 110, 120, 125, 132, 150, 165, 200, 220, 250, 264, 275, 300, 330, 375, 440, 500, 550, 600, 643, 660, 750, 825, 1000, 1100, 1286, 1320, 1375, 1500, 1650, 1929, 2200, 2572, 2750, 3000, 3215, 3300, 3858, 4125, 5144, 5500, 6430, 6600, 7073, 7716, 8250, 9645, 11000, 12860, 14146, 15432, 16075, 16500, 19290, 21219, 25720, 28292, 32150, 33000, 35365, 38580, 42438, 48225, 56584, 64300, 70730, 77160, 80375, 84876, 96450, 106095, 128600, 141460, 160750, 169752, 176825, 192900, 212190, 241125, 282920, 321500, 353650, 385800, 424380, 482250, 530475, 643000, 707300, 848760, 884125, 964500, 1060950, 1414600, 1768250, 1929000, 2121900, 2652375, 3536500, 4243800, 5304750, 7073000, 10609500, 21219000]

約数ペア:

[(1, 21219000), (2, 10609500), (3, 7073000), (4, 5304750), (5, 4243800), (6, 3536500), (8, 2652375), (10, 2121900), (11, 1929000), (12, 1768250), (15, 1414600), (20, 1060950), (22, 964500), (24, 884125), (25, 848760), (30, 707300), (33, 643000), (40, 530475), (44, 482250), (50, 424380), (55, 385800), (60, 353650), (66, 321500), (75, 282920), (88, 241125), (100, 212190), (110, 192900), (120, 176825), (125, 169752), (132, 160750), (150, 141460), (165, 128600), (200, 106095), (220, 96450), (250, 84876), (264, 80375), (275, 77160), (300, 70730), (330, 64300), (375, 56584), (440, 48225), (500, 42438), (550, 38580), (600, 35365), (643, 33000), (660, 32150), (750, 28292), (825, 25720), (1000, 21219), (1100, 19290), (1286, 16500), (1320, 16075), (1375, 15432), (1500, 14146), (1650, 12860), (1929, 11000), (2200, 9645), (2572, 8250), (2750, 7716), (3000, 7073), (3215, 6600), (3300, 6430), (3858, 5500), (4125, 5144)]